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Focused Ion Beam Preparation and Transmission Electron Microscopy of Materials for Energy Applications

Throughout this thesis, samples of various materials with applications in energy converting devices have been prepared by focused ion beam machining and investigated by transmission electron microscopy. Energy converting devices can be solar cells or light emitting diodes, which turn light into electricity or vice versa. They can also be fuel cells or electrolyzer cells, which turn chemical energy

Så kan transporthållbarhet mätas

Ett indikatorramverk för uppföljning av kommuners transporthållbarhet har sammanställts inom forskningsprogrammet HASTA. Indikatorramverket lägger fokus på, jämte objektivt mätbara indikatorer, subjektiva indikatorer som visar hur invånarna upplever transporthållbarheten i sin stad eller hur nöjda de är med transportsystemets effektivitet och dess ekologiska och sociala effekter.

Caldicellulosiruptor Saccharolyticus: an Ideal Hydrogen Producer?

Popular Abstract in English What is common between the science of physics and global politics? They both define power in terms of energy. Indeed, the uneven distribution of petroleum reserves has been one of the main reasons of social, political and economic problems worldwide. Even more worrying is the rapid increase in the levels of greenhouse gases in the atmosphere. This is mainly caused by ouCaldicellulosiruptor saccharolyticus is an extremely thermophilic, strictly anaerobic, Gram-positive and cellulolytic microorganism with a natural ability to produce hydrogen (H2) at nearly theoretical maximum yield, i.e. 4 mol/ mol of glucose. Due to its CO2-free combustion and high energy density, among other desirable properties, H2is touted as a fuel of the future. Biological H2 production b